Method for preparing ethylene-trifluorochloroethylene copolymer hollow fiber microporous membrane

The invention discloses a method for preparing an ethylene-trifluorochloroethylene copolymer hollow fiber microporous membrane. The method comprises the following steps: firstly, a composite diluent and an ethylene-trifluorochloroethylene copolymer are mixed at a high temperature, and then the ethylene-trifluorochloroethylene copolymer hollow fiber microporous membrane is prepared by utilizing a thermo-induced phase separation method. The ethylene-trifluorochloroethylene copolymer hollow fiber microporous membrane provided by the invention has a cross section which shows a uniform spongy structure, and is suitable for being used as a hollow fiber membrane. 本发明公开了种制备乙烯-三氟氯乙烯共聚物中空纤维微孔膜的方法，先使复合稀释剂与乙烯-三氟氯乙烯共聚物在高温下混合，再利用热致相分离法制备得到乙烯-三氟氯乙烯共聚物中空纤维微孔膜。本发明制得的乙烯-三氟氯乙烯共聚物中空纤维微孔膜具有断面呈现均海绵状结构，适合用作中空纤维膜。